DR. AARON MARK BROWN M.D.
NPI 1285054932
Surgery - Trauma Surgery in Longview, WA

Active since April 21, 2014PECOS EnrolledAccepts Medicare Assignment
66.03/100
CMS Quality Rating
1615 DELAWARE ST, LONGVIEW, WA 98632(360) 501-3500(360) 501-3555 Get Directions Write a Review

NPPES record last updated: January 21, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jan 21, 2026, Oct 16, 2019 (2 updates tracked since 2019).

About Dr. Aaron Mark Brown M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. AARON MARK BROWN M.D. (NPI 1285054932) is an individual trauma surgery provider in Longview, Washington, licensed in Washington (MD70061275) and active in the NPI registry since April 2014. He is enrolled in Medicare PECOS, is affiliated with Nemaha Valley Community Hospital, and maintains a secondary practice location in Honolulu.

NPPES Registry Identity

NPI1285054932
Entity TypeIndividualMale
Primary Taxonomy2086S0127X
Provider Legal NameDR. AARON MARK BROWNCredential: M.D.
Location Address1615 DELAWARE STLongview, WA 98632-2367
Mailing Address1356 Lusitana St Ste 510Honolulu, HI 96813-2409 · (808) 586-2890
Fax(360) 501-3555
Sole ProprietorNo
Medical School CMSOtherGraduated 2014
Enumeration DateApril 21, 2014
Last NPPES UpdateJanuary 21, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 21, 2026
✔ NPI 1285054932 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgery · Trauma SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code2086S0127X
License✔ Licensed in WA · MD70061275
Definition
Trauma surgery is a recognized subspecialty of general surgery. Trauma surgeons are physicians who have completed a five-year general surgery residency and usually continue with a one to two year fellowship in trauma and/or surgical critical care, typically leading to additional board certification in surgical critical care. There is no trauma surgery board certification at this point. To obtain board certification in surgical critical care, a fellowship in surgical critical care or anesthesiology critical care must be completed during or after general surgery residency.
Also ListedSurgeryTaxonomy 208600000X · License 20382 (HI), TL5970 (WY)
1615 DELAWARE ST, Longview, WA 98632

Secondary Practice Location 1

Location 11356 Lusitana St Ste 510Honolulu, HI 96813-2409 · Phone (808) 586-2890

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Aaron Mark Brown M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6103259411
PECOS Enrollment IDI20191127000203, I20201006002271, I20260205000569
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

6

Medicare enrollment records show Aaron Brown reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Same address
Multi-Specialty
1615 DELAWARE ST
Longview, WA 98632
  • Reassigned Medicare billing, Washington enrollment
  • 308 clinicians in this Medicare group
Multi-Specialty
33 NICHOLS PKWY
Hood River, OR 97031
  • Reassigned Medicare billing, Oregon enrollment
  • 195 clinicians in this Medicare group
Rural Health
110 PINE ST
Lindsay, NE 68644
  • Reassigned Medicare billing, Nebraska enrollment
  • 59 clinicians in this Medicare group
Critical Access
1600 COMMUNITY DR
Seneca, KS 66538
  • Reassigned Medicare billing, Kansas enrollment
  • Also billed through NPI 1225004914 (Kansas)
  • 19 clinicians in this Medicare group
Critical Access
14TH AND OREGON STREETS
Sabetha, KS 66534
  • Reassigned Medicare billing, Kansas enrollment
  • Also billed through NPI 1568491033 (Kansas)
  • 20 clinicians in this Medicare group
Critical Access
1110 COLUMBINE DR
Holton, KS 66436
  • Reassigned Medicare billing, Kansas enrollment
  • Also billed through NPI 1235238296 (Kansas)
  • 44 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Nemaha Valley Community Hospital

Critical Access Hospitals · Seneca, KS
OwnershipVoluntary non-profit - Private
CMS Certification Number171315
Location1600 Community DrSeneca, KS 66538 · Nemaha County
Emergency services Birthing friendly

Holton Community Hospital

Critical Access Hospitals · Holton, KS
OwnershipVoluntary non-profit - Private
CMS Certification Number171319
Location1110 Columbine DriveHolton, KS 66436 · Jackson County
Emergency services

Great Plains Of Sabetha

Critical Access Hospitals · Sabetha, KS
OwnershipVoluntary non-profit - Private
CMS Certification Number171338
Location603 S 14th StreetSabetha, KS 66534 · Nemaha County
Emergency services

Mid-Columbia Medical Center

Acute Care Hospitals · The Dalles, OR
2/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number380001
Location1700 E 19th StreetThe Dalles, OR 97058 · Wasco County
Emergency services Birthing friendly

Peacehealth St John Medical Center

Acute Care Hospitals · Longview, WA
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number500041
Location1615 Delaware StreetLongview, WA 98632 · Cowlitz County
Emergency services Birthing friendly

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

66.03/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality96.46
Promoting Interoperability0
Improvement Activities40
Cost73.66

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Radiology (Radiation Oncology)
1615 DELAWARE ST
LONGVIEW, WA 98632
Nurse Practitioner (Family)
1615 DELAWARE ST
LONGVIEW, WA 98632
Internal Medicine (Hematology)
1615 DELAWARE ST
LONGVIEW, WA 98632
Nurse Anesthetist, Certified Registered
1615 DELAWARE ST
LONGVIEW, WA 98632
Pharmacist
1615 DELAWARE ST
LONGVIEW, WA 98632
Nurse Practitioner (Family)
1615 DELAWARE ST
LONGVIEW, WA 98632
Surgery
1615 DELAWARE ST
LONGVIEW, WA 98632
Pharmacist
1615 DELAWARE ST
LONGVIEW, WA 98632

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Aaron Brown's NPI number?

The NPI number for Aaron Brown is 1285054932. It was assigned to this individual provider in the NPPES registry on April 21, 2014.

Where is Aaron Brown located?

Aaron Brown practices at 1615 Delaware St, Longview, WA 98632. The listed phone number is (360) 501-3500.

What is Aaron Brown's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Trauma Surgery, with taxonomy code 2086S0127X.

Is Aaron Brown enrolled in Medicare?

Yes. Aaron Brown is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Aaron Brown's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aaron Brown reassigns Medicare benefits to 6 organizations: Peacehealth (Longview, WA), Mid-Columbia Medical Center (Hood River, OR), Columbus Community Hospital Inc (Lindsay, NE), Nemaha Valley Community Hospital (Seneca, KS), Great Plains Of Sabetha Inc (Sabetha, KS) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Aaron Brown's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Aaron Brown accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Sunflower Health Plan, Ambetter of Oklahoma and Moda Health Plan, Inc. and 3 other insurers list Aaron Brown as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Aaron Brown affiliated with any hospitals?

According to CMS data, Aaron Brown is affiliated with Nemaha Valley Community Hospital, Holton Community Hospital, Great Plains Of Sabetha, Mid-Columbia Medical Center and Peacehealth St John Medical Center.

When was this NPI record last updated?

The NPPES record for Aaron Brown was last updated on January 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.